20571166

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 40037760

約数和(自身を除く): 19466594

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 139, 154, 217, 278, 341, 434, 682, 961, 973, 1529, 1922, 1946, 2387, 3058, 4309, 4774, 6727, 8618, 10571, 10703, 13454, 21142, 21406, 30163, 47399, 60326, 73997, 94798, 133579, 147994, 267158, 331793, 663586, 935053, 1469369, 1870106, 2938738, 10285583, 20571166]

約数ペア:

[(1, 20571166), (2, 10285583), (7, 2938738), (11, 1870106), (14, 1469369), (22, 935053), (31, 663586), (62, 331793), (77, 267158), (139, 147994), (154, 133579), (217, 94798), (278, 73997), (341, 60326), (434, 47399), (682, 30163), (961, 21406), (973, 21142), (1529, 13454), (1922, 10703), (1946, 10571), (2387, 8618), (3058, 6727), (4309, 4774)]